A compound with the formula C9H8O3 shows a strong hand at 1661 cm–1 in the infrared spectrum. The proton NMR spectrum is shown, but there is a small impurity peak at 3.35 ppm that should be ignored. Expansions are shown for the downfield protons. In addition, the normal carbon-13, DEPT-135, and DEPT-90 spectral results are tabulated.
A compound with the formula C9H8O3 shows a strong hand at 1661 cm–1 in the infrared spectrum. The proton NMR spectrum is shown, but there is a small impurity peak at 3.35 ppm that should be ignored. Expansions are shown for the downfield protons. In addition, the normal carbon-13, DEPT-135, and DEPT-90 spectral results are tabulated.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A compound with the formula C9H8O3 shows a strong hand at 1661 cm–1 in the infrared spectrum. The proton NMR spectrum is shown, but there is a small impurity peak at 3.35 ppm that should be ignored. Expansions are shown for the downfield protons. In addition, the normal carbon-13, DEPT-135, and DEPT-90 spectral results are tabulated.
Transcribed Image Text:1. Deduce the structure of this compound from these spectra.
10
3
1
Transcribed Image Text:140
130
7.0
(ppm)
C3H3O3
Normal Carbon
DEPT-135
DEPT-90
26 ppm
Positive
No peak
102
Negative
No peak
107
Positive
Positive
108
Positive
Positive
125
Positive
Positive
No peak
No peak
No peak
No peak
No peak
No peak
No peak
No peak
132
148
151
195
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